MPI¶
-
class
dolfin.cpp.common.
MPI
¶ Bases:
object
This class provides utility functions for easy communication with MPI and handles cases when DOLFIN is not configured with MPI.
-
static
barrier
(*args)¶ Set a barrier (synchronization point)
-
static
compute_local_range
(*args)¶ Return local range for given process, splitting [0, N - 1] into size() portions of almost equal size
-
static
gather
(*args)¶ Overloaded versions
gather(comm, in_values, out_values, receiving_process=0)
Gather values on one process
gather(comm, in_values, out_values, receiving_process=0)
Gather strings on one process
-
static
global_offset
(*args)¶ Find global offset (index) (wrapper for MPI_(Ex)Scan with MPI_SUM as reduction op)
-
static
index_owner
(*args)¶ Return which process owns index (inverse of local_range)
-
static
is_broadcaster
(*args)¶ Determine whether we should broadcast (based on current parallel policy)
-
static
is_receiver
(*args)¶ Determine whether we should receive (based on current parallel policy)
-
static
local_range
(*args)¶ Overloaded versions
local_range(comm, N)
Return local range for local process, splitting [0, N - 1] into size() portions of almost equal size
local_range(comm, process, N)
Return local range for given process, splitting [0, N - 1] into size() portions of almost equal size
-
static
max
(*args)¶ Return global max value
-
static
min
(*args)¶ Return global min value
-
static
rank
(*args)¶ Return process rank for the communicator
-
static
size
(*args)¶ Return size of the group (number of processes) associated with the communicator
-
static
sum
(*args)¶ Sum values and return sum
-
thisown
¶ The membership flag
-
static